Bacterial response to siderophore and quorum-sensing chemical signals in the seawater microbial community.

ABSTRACT:

Background

Oceans are iron-deficient and nutrient-poor environments. These conditions impart limitations on our understanding of and our ability to identify microorganisms from the marine environment. However, less of knowledge on the influence of siderophores and N-acyl homoserinelactone as interspecies communication signals on the bacterial diversity of seawater has been understood.

Results

In the presence of 0.1 nM of the commercial siderophore desferroixamine and the known quorum-sensing chemical signals, synthetic N-(3-oxo)-hexanoylhomoserine lactone (0.1 nM) or N-octanoylhomoserine lactone (0.1 nM), the total numbers of bacteria in S9905 seawater increased nearly three-fold, and nearly eight-fold in S0011 seawater as determined by DAPI staining and counting, and increa

SUBMITTER: Guan LL 

PROVIDER: S-EPMC59891 | biostudies-literature | 2001

REPOSITORIES: biostudies-literature